Three games into his senior season, Skyline quarterback and USC commit Max Browne is making a run at some national high school records.

After a 27-for-34 performance Saturday against Coeur d’Alene, Idaho, Browne is completing 70.4 percent of his passes. If he maintains that pace, he will rank 11th all-time for completion percentage in a season, according to the National High School Sports Record Book. The record-holder is California’s Dano Graves at 75.2 percent, 0.1 percent better than former NFL quarterback Tim Couch.

Over his career, Browne is 674 for 974, 69.2 percent. That would put him fifth all-time among quarterbacks with at least 600 career attempts. The leader, Garrett Grayson from Heritage of Vancouver, completed 71.6 percent.

“This year means so much to Max,” Skyline coach Mat Taylor said. “He’s possessed. Skyline football has been his life since basically 1998, when his brother started playing for us.

“He’s on a mission, but not on a stereotypical one. He’s on a mission to just have fun with his friends and enjoy the ride and make sure he makes the most of it.”

Browne will also likely move up the Washington state record books. He ranks fourth in career passing yards with 9,570. That puts him 577 behind DeSales’ T.J. Conley for third place and 1,797 behind Prosser’s Kellen Moore for second.

DeSales’ Brian Lindgren (1996-98) had a state-record 12,575 passing yards in 39 career games. Browne has played 43.

In Skyline’s 71-20 rout of Coeur d’Alene, which was Idaho’s top-ranked team and had a 24-game win streak, Browne passed for 451 yards and six touchdowns. He played only two series in the third quarter.

By halftime, Browne had already thrown for 380 yards. His one mistake came when he threw into double coverage and was intercepted.

“But I’m so blessed because that’s what most quarterbacks do five or six times a game,” Taylor said. “Max was just on point.”

Jayson Jenks: 206-464-8277 or jjenks@seattletimes.com; on Twitter: @jaysonjenks. Jayson Jenks covers the Seahawks for the Seattle Times. He also provides coverage of other Seattle-area teams throughout the year.